Measuring device for decoration

Abstract

The invention discloses a measuring device for decoration, and relates to the field of indoor decoration, the measuring device comprises a protractor, the protractor is provided with a ruler, the bottom of the ruler is provided with a lineation structure, the lineation structure comprises a lantern ring, and embedded grooves are formed in the positions, close to one end, of the top of the ruler and the circle center of the bottom of the protractor in a penetrating mode; limiting blocks are rotationally connected into the two embedded grooves, a connecting shaft is fixedly connected between the two limiting blocks, the connecting shaft is rotationally connected with the ruler and the protractor, a sliding ruler is arranged at the bottom of the ruler, a through groove is formed in the position, close to one end, of the top of the sliding ruler in a penetrating mode, and the lantern ring is located in the through groove; two fixing shafts are fixedly connected to the outer surface of the lantern ring, fixing elastic films are fixedly connected to the top and the bottom of the lantern ring, the lantern ring is rotationally connected with the sliding ruler through the two fixing shafts, and an arc groove is formed in the position, close to one end, of the top of the straight ruler and penetrates through the bottom. And by arranging the scribing structure, the convenience and accuracy of measurement are improved, and various decoration and decoration requirements are met.

Description

Technical Field

[0001] The invention relates to the field of interior decoration, and in particular to a measuring device for decoration. Background Art

[0002] The field of interior decoration involves the process of designing, renovating and decorating the interior space of a building to meet functional needs, aesthetic requirements and comfort. It covers a series of activities from space planning to final decoration. When designing interior decoration, it is necessary to accurately measure the space dimensions, walls, ceilings, floors, etc., and measuring devices can help designers accurately measure the various dimensions of the room, so as to formulate a suitable design plan; The Chinese patent with the publication number "CN113091560A" discloses "a convenient measuring device for architectural design, including an external connection mechanism; a first telescopic mechanism is movably arranged inside the second connection shell on the external connection mechanism, and a second telescopic mechanism is movably arranged inside the first connection shell. The arrangement of the first connection shell and the second connection shell", although it can solve the problem that the existing measuring tools cannot effectively ensure the horizontal and vertical measurements when measuring a small range of distance, even in a relatively narrow place, and will cause errors in the measurement results. When measuring, a large number of measuring tools need to be carried, which is troublesome and laborious, and they are all fixed It cannot be used to measure other values, and it cannot provide drawing assistance when drawing. However, when drawing design drawings, it is impossible to draw arcs that cannot be directly specified, and its measurement range cannot be changed, so that it is impossible to directly measure the length of objects beyond the range. In addition, when measuring the length of an entity, it is necessary to align one side of the entity with the "zero" scale of the ruler, and then observe the scale pointed to by the other side of the entity to obtain the length of the entity. However, when one side of the entity is an irregular shape or an arc, the pointed scale cannot be observed intuitively and accurately by the human eye, which will lead to measurement errors and the measurement device is not accurate enough. Therefore, the present invention proposes a measuring device for decoration. Summary of the invention

[0003] The main purpose of the present invention is to provide a measuring device for decoration, which can draw an accurate circle or arc around a protractor, and use a finger rod to point to the angle scale line of the protractor to accurately calculate the angle of the drawn arc.

[0004] To achieve the above object, the technical solution adopted by the present invention is: A measuring device for decoration, comprising a protractor, wherein the protractor is provided with a ruler, a marking structure is provided at the bottom of the ruler, the marking structure comprises a collar, an embedded groove is provided at one end of the top of the ruler and at the center of the bottom of the protractor, the insides of the two embedded grooves are both rotatably connected with limit blocks, a connecting shaft is fixedly connected between the two limit blocks, and the connecting shaft is rotatably connected to the ruler and the protractor; A slide is provided at the bottom of the ruler, a through groove is provided at the top of the slide and passes through the bottom at one end, a collar is located inside the through groove, two fixed shafts are fixedly connected to the outer surface of the collar, a fixed elastic membrane is fixedly connected to the top and bottom of the collar, the collar is rotatably connected to the slide through the two fixed shafts, and an arc groove is provided at the top of the ruler and passes through the bottom at one end.

[0005] As a further solution of the present invention, one end of the ruler is fixedly connected to a finger rod, and one side of the ruler overlaps with the "zero" angle scale line of the protractor.

[0006] As a further solution of the present invention, the top of the slide ruler is located at the rear of the through slot and has two slide grooves, the bottom of the ruler is fixedly connected to two fixed blocks at the other end, and an extended scale line is set on one side of the top of the slide ruler.

[0007] As a further solution of the present invention, the fixed block is slidably connected to the slide groove, the extended scale line is an extension of the length scale line on the ruler, and the diameter of the arc groove is consistent with the diameter of the through groove.

[0008] As a further solution of the present invention, a top block is arranged at the top of one end of the sliding ruler, the top block is in an inverted L shape, and two elastic blocks are fixedly connected to the bottom of the horizontal part of the top block at the rear part, two slots are provided at the top of the ruler near the other end, and a bottom block is arranged at the bottom of one end of the sliding ruler.

[0009] As a further solution of the present invention, the size of the card slot is larger than the size of the elastic card block, and the elastic card block is adaptively matched with the card slot.

[0010] As a further solution of the present invention, the bottom of the bottom block and the bottom of the protractor are in the same horizontal plane, and the positions of the top block and the bottom block are symmetrical up and down along the slide rule.

[0011] As a further solution of the present invention, a linear dimension direct measurement structure is provided on one side of the slide, and the linear dimension direct measurement structure includes a sliding baffle, a rotation groove is provided at one end of the top of the slide near one side, and a rotation shaft is fixedly connected to the rotation groove through the vertical part of the top block and the vertical part of the bottom block, a straight groove is provided on one side of the slide, the sliding baffle is located in the straight groove, and the top and bottom of the sliding baffle are fixedly connected with a semicircular rotation shaft, the interior of the slide is provided with semicircular grooves at one end near the top and one end near the bottom of the straight groove, the interior of the slide is provided with connecting grooves connected to the two semicircular grooves at the top and bottom of the straight groove, and a size scale line is provided on one side of the slide at the top of the straight groove.

[0012] As a further solution of the present invention, the semicircular rotating shaft is adaptively matched with the semicircular groove, and the semicircular rotating shaft is adaptively matched with the connecting groove after rotating ninety degrees clockwise.

[0013] As a further solution of the present invention, the cross section of the rotating shaft is a quarter circle, and the rotating shaft is adaptively matched with the rotating groove.

[0014] The above-mentioned embodiments of the present invention can achieve the following beneficial effects: by setting a marking structure, the user can draw an accurate circle or arc around the protractor by holding the pen and rotating the ruler, and by using the finger rod to point to the angle scale line of the protractor, the angle of the drawn arc can be accurately calculated. This combined design improves the convenience and accuracy of measurement and is suitable for various decoration and decoration needs; By setting a fixed block to match the slide slot, the sliding function of the slide ruler expands the length measurement range of the ruler, allowing users to measure longer lengths and draw arcs or circles of any radius within the measuring range of the device, thereby improving the flexibility and accuracy of the overall measurement and meeting various complex decoration measurement needs; By setting the top block to match the bottom block, the elastic card block and the card slot can be engaged with each other to firmly connect the ruler and the slide rule, ensuring that the slide rule remains stable when not in use, preventing the slide rule from being affected by vibration or accidental extension, and when the slide rule is in an extended state, the bottom block can support one end of the slide rule, avoiding the slide rule from falling and deforming due to its own weight, resulting in measurement deviation due to deformation of the slide rule when the ruler and the slide rule are used for measurement, thereby ensuring the accuracy of the measurement and reducing the error caused by the instability of the device; By setting up a linear dimension direct measurement structure, the sliding bar clamps the entity to be measured, and combined with the linear scale lines on the sliding bar, the length of the entity can be measured directly and quickly. This direct measurement structure avoids human errors in traditional measurement methods, makes the value reading more accurate, and improves the efficiency and reliability of measurement; By setting the rotating shaft to cooperate with the rotating groove, the semicircular rotating shaft cannot rotate when sliding, and the rotating shaft cannot continue to rotate after rotating 270 degrees counterclockwise, thereby ensuring that when the sliding baffle rod, the top block and the bottom block clamp the entity to be measured, the sliding baffle rod, the top block and the bottom block themselves will not shake, thereby ensuring the accuracy of the measurement, and by preventing the rotating shaft from rotating excessively, the measurement process is stabilized, the generation of errors is reduced, and the high accuracy of the device in actual measurement is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a decoration measuring device of the present invention; Figure 2 A schematic diagram of a marking structure of a decoration measuring device according to the present invention; Figure 3 A protractor analysis and ruler disassembly diagram of a decoration measuring device of the present invention; Figure 4 This is a schematic diagram of the ring structure of a decoration measuring device of the present invention; Figure 5 It is a schematic diagram of a slide ruler of a decoration measuring device of the present invention when it slides to its longest state; Figure 6 This is a bottom perspective view of a ruler structure of a decoration measuring device of the present invention; Figure 7 This is a disassembled diagram of the top block, bottom block and ruler structure of a decoration measuring device of the present invention; Figure 8 This is a bottom perspective view of a top block of a decoration measuring device of the present invention; Fig. 9 This is a disassembled diagram of the linear dimension direct measurement structure of a decoration measuring device of the present invention; Fig.10 This is a dissecting diagram of the linear dimension direct measurement structure of a decoration measuring device of the present invention; Fig.11 This is a schematic diagram of the linear dimension direct measurement structure of a decoration measuring device of the present invention when in use.

[0016] In the figure: 1. protractor; 2. ruler; 3. marking structure; 4. linear dimension direct measurement structure; 5. sliding ruler; 6. through groove; 7. arc groove; 8. collar; 9. fixed elastic membrane; 10. embedded groove; 11. limit block; 12. finger rod; 13. fixed shaft; 14. slide groove; 15. extended scale line; 16. fixed block; 17. top block; 18. bottom block; 19. elastic clamping block; 20. clamping groove; 21. dimension scale line; 22. rotating groove; 23. rotating shaft; 24. straight groove; 25. sliding stop rod; 26. semicircular rotating shaft; 27. semicircular groove; 28. connecting groove; 29. ​​connecting shaft. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0018] like Figure 1 - Fig.11 As shown, a measuring device for decoration includes a protractor 1, the protractor 1 is provided with a ruler 2, a marking structure 3 is provided at the bottom of the ruler 2, the marking structure 3 includes a collar 8, an embedded groove 10 is penetrated at one end of the top of the ruler 2 and the center of the bottom of the protractor 1, the insides of the two embedded grooves 10 are rotatably connected to limit blocks 11, a connecting shaft 29 is fixedly connected between the two limit blocks 11, and the connecting shaft 29 is rotatably connected to the ruler 2 and the protractor 1; A slide 5 is provided at the bottom of the ruler 2, a through groove 6 is provided at the top of the slide 5 and passes through the bottom, a collar 8 is located inside the through groove 6, two fixed shafts 13 are fixedly connected to the outer surface of the collar 8, a fixed elastic membrane 9 is fixedly connected to the top and bottom of the collar 8, the collar 8 is rotatably connected to the slide 5 through the two fixed shafts 13, and an arc groove 7 is provided at the top of the ruler 2 and passes through the bottom.

[0019] In this embodiment, one end of the ruler 2 is fixedly connected to a finger rod 12, and one side of the ruler 2 overlaps with the "zero" angle scale line of the protractor 1; The measuring device is placed directly on the bearing surface to be measured, and the external pen is stably inserted into the inside of the ring 8 through two fixed elastic membranes 9, and the pen tip is in full contact with the bearing surface. Due to the mutual cooperation of the two limit blocks 11 and the connecting shaft 29, the ruler 2 and the protractor 1 are rotatably connected. Therefore, by holding the pen and rotating the ruler 2, a circle or an arc can be directly drawn around the protractor 1. If you want to draw an arc with a certain angle, you need to hold the pen and rotate the ruler 2 counterclockwise so that the finger rod 12 points to the angle scale line of the protractor 1. The angle of the arc drawn at this time can be reversely calculated by the angle displayed by the finger rod 12 pointing to the angle scale line of the protractor 1. For example, when the angle displayed by the finger rod 12 pointing to the angle scale line of the protractor 1 is sixty, the angle of the arc drawn at this time is one hundred and twenty degrees.

[0020] In this embodiment, the top of the slide ruler 5 is located at the rear of the through slot 6 and has two slide slots 14, the bottom of the ruler 2 is fixedly connected to two fixing blocks 16 at the other end, and an extended scale line 15 is provided at one side of the top of the slide ruler 5; The two fixed blocks 16 and the two slide grooves 14 are slidably connected to each other, and the sliding slider 5 is slid. Since an extended scale line 15 is set on one side of the top of the sliding slider 5, and the extended scale line 15 is an extension of the length scale line on the ruler 2, the sliding slider 5 can be made to participate in the length measurement of the entity by sliding the sliding slider 5, thereby increasing the length measurement range of the ruler 2. In addition, since the sliding slider 5 can slide, an arc or circle of any radius within the length measurement range of the device can be directly drawn by a pen.

[0021] In this embodiment, the fixed block 16 is slidably connected to the slide groove 14 , the extended scale line 15 is an extension of the length scale line on the ruler 2 , and the diameter of the arc groove 7 is consistent with the diameter of the through groove 6 .

[0022] In this embodiment, a top block 17 is provided at the top of one end of the slide ruler 5, and the top block 17 is in an inverted L shape. Two elastic clamping blocks 19 are fixedly connected to the bottom of the horizontal part of the top block 17 at the rear, and two clamping grooves 20 are provided at the top of the ruler 2 at the other end. A bottom block 18 is provided at the bottom of one end of the slide ruler 5. When the top block 17 is in the initial position, the two elastic blocks 19 are engaged with the two slots 20, so that when the slide rule 5 is not in use, the slide rule 5 will not shake or extend accidentally. Since the bottom of the bottom block 18 and the bottom of the protractor 1 are in the same horizontal plane, the slide rule 5 can be supported at one end of the slide rule 5 in the extended state, so that when the slide rule 5 is in the extended state, one end of the slide rule 5 will not fall and deform due to its own weight, thereby avoiding the deviation of the length measurement due to the deformation of the slide rule 5 in the extended state, ensuring the accuracy of the length measurement of the device and reducing the measurement error.

[0023] In this embodiment, the size of the card slot 20 is larger than the size of the elastic card block 19 , and the elastic card block 19 is adaptively matched with the card slot 20 .

[0024] In this embodiment, the bottom of the bottom block 18 and the bottom of the protractor 1 are in the same horizontal plane, and the positions of the top block 17 and the bottom block 18 are symmetrical up and down along the slide rule 5 .

[0025] In this embodiment, a linear dimension direct measurement structure 4 is provided on one side of the slide 5, and the linear dimension direct measurement structure 4 includes a sliding stopper 25, a rotation groove 22 is provided at one end of the top of the slide 5 near one side, and a rotation shaft 23 is fixedly connected to the rotation groove 22 through the vertical part of the top block 17 and the vertical part of the bottom block 18, a straight groove 24 is provided on one side of the slide 5, the sliding stopper 25 is located in the straight groove 24, and the top and bottom of the sliding stopper 25 are fixedly connected to a semicircular rotation shaft 26, and the interior of the slide 5 is located at one end of the top and one end of the straight groove 24. A connecting groove 28 connected to the two semicircular grooves 27 is provided at the top and bottom of the straight groove 24, and a size scale line 21 is provided on one side of the slide 5 at the top of the straight groove 24; Due to the arrangement of the top block 17, the collar 8 cannot be used directly. Therefore, when the collar 8 is needed, first slide the slider 5, then rotate the top block 17 and the bottom block 18 counterclockwise 270 degrees, so that the top block 17 and the bottom block 18 are perpendicular to one side of the slider 5. At this time, the collar 8 can be used as usual. When it is necessary to directly measure the length of the entity, there is no need to align with the length scale line of the ruler 2. It is only necessary to rotate the top block 17 counterclockwise, and drive the bottom block 18 to rotate counterclockwise along the rotating groove 22 through the rotating shaft 23 until the top block 17 and the bottom block 18 are perpendicular to one side of the slide ruler 5. At this time, place the entity to be measured at the rear of the top block 17 and the bottom block 18, and then rotate the sliding block 25 clockwise. At this time, the two semicircular rotating shafts 26 will rotate along the two semicircular grooves 27. After the sliding block 25 rotates ninety degrees clockwise, it slides along the two connecting grooves 28 and inside the straight groove 24 through the two semicircular rotating shafts 26 until, The sliding block 25, the top block 17 and the bottom block 18 clamp the entity to be measured, and the length of the entity can be measured by the scale pointed by the side of the sliding block 25 on the size scale line 21. The traditional measurement method is to align one side of the entity to be measured with the "zero" scale of the ruler 2, and then observe the scale aligned on the length scale line of the ruler 2 on the other side of the entity by human eyes, so as to measure the length of the entity. Therefore, compared with the traditional measurement method, the length of the entity can be directly and quickly measured by the linear dimension direct measurement structure 4, and because the scale pointed by the sliding block 25 is read, the reading of the value is more accurate; Since the semicircular rotating shaft 26 cannot rotate while sliding along the connecting groove 28, and the rotating shaft 23 cannot continue to rotate counterclockwise after rotating 270 degrees counterclockwise, it is ensured that when the sliding baffle rod 25, the top block 17 and the bottom block 18 clamp the entity to be measured, the sliding baffle rod 25, the top block 17 and the bottom block 18 themselves will not shake, thereby ensuring the accuracy of the measurement.

[0026] In this embodiment, the semicircular rotating shaft 26 is adaptively matched with the semicircular groove 27 , and the semicircular rotating shaft 26 is adaptively matched with the connecting groove 28 after rotating ninety degrees clockwise.

[0027] In this embodiment, the cross section of the rotating shaft 23 is a quarter circle, and the rotating shaft 23 is adaptively matched with the rotating groove 22 .

[0028] It should be noted that the present invention is a measuring device for decoration. When in use, the protractor 1 can measure the angle of an object or a multi-segment line, and the ruler 2 can measure the length of an entity or the length of a line segment; In addition, the measuring device is directly placed on the bearing surface to be measured, and the external pen is stably inserted into the inside of the ring 8 through the two fixed elastic membranes 9, and the pen tip is fully in contact with the bearing surface. Due to the mutual cooperation of the two limit blocks 11 and the connecting shaft 29, the ruler 2 and the protractor 1 are rotatably connected. Therefore, by holding the pen and rotating the ruler 2, a circle or an arc can be directly drawn around the protractor 1. If you want to draw an arc with a certain angle, you need to hold the pen and rotate the ruler 2 counterclockwise so that the finger rod 12 points to the angle scale line of the protractor 1. The angle of the arc drawn at this time can be reversely calculated by the angle displayed by the finger rod 12 pointing to the angle scale line of the protractor 1. For example, when the angle displayed by the finger rod 12 pointing to the angle scale line of the protractor 1 is sixty, the angle of the arc drawn at this time is one hundred and twenty degrees. The two fixed blocks 16 and the two slide grooves 14 are slidably connected to each other, and the sliding ruler 5 is slid. Since an extended scale line 15 is provided on one side of the top of the sliding ruler 5, and the extended scale line 15 is an extension of the length scale line on the ruler 2, the sliding ruler 5 can also participate in the length measurement of the entity by sliding the sliding ruler 5, thereby increasing the length measurement range of the ruler 2. In addition, since the sliding ruler 5 can slide, an arc or circle of any radius within the length measurement range of the device can be directly drawn by a pen; When the top block 17 is in the initial position, the two elastic blocks 19 are engaged with the two slots 20, so that when the slide 5 is not in use, the slide 5 will not shake or extend accidentally. Since the bottom of the bottom block 18 and the bottom of the protractor 1 are in the same horizontal plane, the slide 5 can be supported at one end of the slide 5 in the extended state, so that the slide 5 will not fall and deform due to its own weight in the extended state. Therefore, the slide 5 is prevented from causing deviation in length measurement due to its own deformation in the extended state, thereby ensuring the accuracy of the device in length measurement and reducing measurement errors. Due to the arrangement of the top block 17, the collar 8 cannot be used directly. Therefore, when the collar 8 is needed, first slide the slider 5, then rotate the top block 17 and the bottom block 18 counterclockwise 270 degrees, so that the top block 17 and the bottom block 18 are perpendicular to one side of the slider 5. At this time, the collar 8 can be used as usual. When it is necessary to directly measure the length of the entity, there is no need to align with the length scale line of the ruler 2. It is only necessary to rotate the top block 17 counterclockwise, and drive the bottom block 18 to rotate counterclockwise along the rotating groove 22 through the rotating shaft 23 until the top block 17 and the bottom block 18 are perpendicular to one side of the slide ruler 5. At this time, place the entity to be measured at the rear of the top block 17 and the bottom block 18, and then rotate the sliding block 25 clockwise. At this time, the two semicircular rotating shafts 26 will rotate along the two semicircular grooves 27. After the sliding block 25 rotates ninety degrees clockwise, it slides along the two connecting grooves 28 and inside the straight groove 24 through the two semicircular rotating shafts 26 until, The sliding block 25, the top block 17 and the bottom block 18 clamp the entity to be measured, and the length of the entity can be measured by the scale pointed by the side of the sliding block 25 on the size scale line 21. The traditional measurement method is to align one side of the entity to be measured with the "zero" scale of the ruler 2, and then observe the scale aligned on the length scale line of the ruler 2 on the other side of the entity by human eyes, so as to measure the length of the entity. Therefore, compared with the traditional measurement method, the length of the entity can be directly and quickly measured by the linear dimension direct measurement structure 4, and because the scale pointed by the sliding block 25 is read, the reading of the value is more accurate; Since the semicircular rotating shaft 26 cannot rotate while sliding along the connecting groove 28, and the rotating shaft 23 cannot continue to rotate counterclockwise after rotating 270 degrees counterclockwise, it is ensured that when the sliding baffle rod 25, the top block 17 and the bottom block 18 clamp the entity to be measured, the sliding baffle rod 25, the top block 17 and the bottom block 18 themselves will not shake, thereby ensuring the accuracy of the measurement.

[0029] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A measuring device for decoration, comprising a protractor (1), wherein the protractor (1) is provided with a ruler (2), characterized in that: A marking structure (3) is provided at the bottom of the ruler (2), the marking structure (3) comprising a collar (8), an embedded groove (10) is provided through one end of the top of the ruler (2) and the center of the bottom of the protractor (1), the insides of the two embedded grooves (10) are both rotatably connected to limit blocks (11), a connecting shaft (29) is fixedly connected between the two limit blocks (11), and the connecting shaft (29) is rotatably connected to both the ruler (2) and the protractor (1); A slide ruler (5) is arranged at the bottom of the ruler (2); a through groove (6) is provided at the top of the slide ruler (5) and passes through the bottom; a collar (8) is located inside the through groove (6); two fixed shafts (13) are fixedly connected to the outer surface of the collar (8); a fixed elastic membrane (9) is fixedly connected to the top and bottom of the collar (8); the collar (8) is rotatably connected to the slide ruler (5) via the two fixed shafts (13); and an arc groove (7) is provided at the top of the ruler (2) and passes through the bottom.

2. A decoration measuring device according to claim 1, characterized in that: One end of the ruler (2) is fixedly connected to a finger rod (12), and one side of the ruler (2) overlaps with the "zero" angle scale line of the protractor (1).

3. A decoration measuring device according to claim 1, characterized in that: The top of the slide ruler (5) is located at the rear of the through groove (6) and has two slide grooves (14). The bottom of the ruler (2) is fixedly connected to two fixing blocks (16) at the other end. An extended scale line (15) is provided at one side of the top of the slide ruler (5).

4. A decoration measuring device according to claim 3, characterized in that: The fixed block (16) is slidably connected to the slide groove (14), the extended scale line (15) is an extension of the length scale line on the ruler (2), and the diameter of the arc groove (7) is consistent with the diameter of the through groove (6).

5. A decoration measuring device according to claim 1, characterized in that: A top block (17) is arranged at the top of one end of the sliding ruler (5), and the top block (17) is in an inverted L shape. Two elastic clamping blocks (19) are fixedly connected to the bottom of the horizontal part of the top block (17) at the rear. Two clamping grooves (20) are arranged at the top of the ruler (2) at the other end. A bottom block (18) is arranged at the bottom of one end of the sliding ruler (5).

6. A decoration measuring device according to claim 5, characterized in that: The size of the card slot (20) is larger than the size of the elastic card block (19), and the elastic card block (19) and the card slot (20) are adaptively matched.

7. A decoration measuring device according to claim 5, characterized in that: The bottom of the bottom block (18) and the bottom of the protractor (1) are located at the same horizontal plane, and the positions of the top block (17) and the bottom block (18) are symmetrical up and down along the slide rule (5).

8. A decoration measuring device according to claim 5, characterized in that: A linear dimension direct measurement structure (4) is provided on one side of the slide ruler (5), and the linear dimension direct measurement structure (4) comprises a sliding stopper (25); a rotation groove (22) is provided at one end of the top of the slide ruler (5) passing through the bottom; a rotation shaft (23) is fixedly connected to the rotation groove (22) through the vertical portion of the top block (17) and the vertical portion of the bottom block (18); a straight groove (24) is provided on one side of the slide ruler (5); the sliding stopper (25) is located in the straight groove (24); the top and bottom of the sliding stopper (25) are fixedly connected to a semicircular rotation shaft (26); a semicircular groove (27) is provided at one end of the top and one end of the bottom of the straight groove (24) in the interior of the slide ruler (5); a connecting groove (28) connected to the two semicircular grooves (27) is provided at the top and bottom of the straight groove (24) in the interior of the slide ruler (5); and a dimension scale line (21) is provided at the top of the straight groove (24) on one side of the slide ruler (5).

9. A decoration measuring device according to claim 8, characterized in that: The semicircular rotating shaft (26) is adaptively matched with the semicircular groove (27), and the semicircular rotating shaft (26) is adaptively matched with the connecting groove (28) after rotating ninety degrees clockwise.

10. A decoration measuring device according to claim 8, characterized in that: The cross section of the rotating shaft (23) is in the shape of a quarter circle, and the rotating shaft (23) is adaptively matched to the rotating groove (22).

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